National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

22°C

72°F

Humidity 99%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 22°C (71°F)
Visibility 16 km
Last update 13 Jul 1:35 am CDT
Extended Forecast for

Gillespie IL

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °C

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 29. Calm wind.

    High: 29 °C

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. Calm wind.

    Low: 20 °C

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.

    High: 31 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Southeast wind 3 to 8 km/h.

    Low: 21 °C

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 31.

    High: 31 °C

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 22.

    Low: 22 °C

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32.

    High: 32 °C

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 22.

    Low: 22 °C

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Calm wind.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 29. Calm wind.
Sunday Night
Mostly cloudy, with a low around 20. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Southeast wind 3 to 8 km/h.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 31.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 22.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 22.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 31.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 20.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 19.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 m)
Last Update:
10:52 pm CDT Jul 12, 2025
Forecast Valid:
1am CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation